ISLAMABAD, May 27 (Xinhua) -- Police in Pakistan's eastern Punjab province said Sunday that six terrorist suspects have been killed in an encounter.

A spokesman for the counter-terrorism department said that a group of eight terrorist suspects, riding motorcycles, opened fire on a police post after they were asked to stop in Gujrtat district.

The police retaliated and killed six while two escaped, he told the media.

The spokesmen said the suspects belonged to a banned group and were planning a terrorist activity to target sensitive installations.

A wanted terrorist, Suhaib, was among those killed who was included in the red book, a list of most wanted criminals, the spokesman said.

The spokesman said that the killed were involved in a bomb blast in Lahore last year, which killed 26 people including police officers.

They were also behind the killing of a senior army officer in Sargodha, a main city in Punjab, in 2014.